When citing online resources my university's regulation stipulates that we have to add information on when we accessed the specific website. This can for example be of the form "Retrieved: April 7, 2012".
When using the following simple setup for biblatex, is there a field in @online or so that allows me to have this printed automatically in the bibliography?
\usepackage[style=authoryear, backend=biber]{biblatex}

urldate. – Marco Daniel Apr 07 '12 at 13:22urldatebut it is ommitted in the bibliography. – Ingo Apr 07 '12 at 13:29urldatewas omitted in the bibliography, it was fixed by deleting all the aux files and recompiling. – Zwähnia May 30 '13 at 14:12